2018 Hyundai Tucson Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Hyundai Tucson and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2018 Hyundai Tucson cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2018 Hyundai Tucson cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2018 Hyundai Tucson?

When troubleshooting the non-functioning cruise control in a 2018 Hyundai Tucson, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse in the fuse box to ensure it is intact; a blown fuse can easily disrupt the system. Next, verify that the cruise control settings are correctly configured according to the vehicle's manual, as incorrect settings can prevent activation. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that may indicate specific problems within the cruise control system. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as stuck buttons can hinder functionality. It’s also crucial to test the brake pedal switch, since the cruise control is designed to disengage when the brake is applied; a faulty switch may cause the system to remain inactive. Finally, check the vehicle speed sensor, as a malfunctioning sensor can lead to cruise control issues. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control problem in your Tucson.

What are the common problems that could cause the cruise control to stop working in a 2018 Hyundai Tucson?

When troubleshooting cruise control issues in a 2018 Hyundai Tucson, it's important to recognize the common problems that could be causing the malfunction. A faulty brake pedal switch is often a primary suspect, as it may fail to send the correct signal to the cruise control system when the brake is engaged, leading to unexpected disengagement. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a consistent speed, resulting in erratic behavior. Checking for a blown fuse is a straightforward step, as this can completely disable the cruise control functionality. Problems with the throttle control system can also affect performance, potentially causing the cruise control to disengage unexpectedly. The Electronic Control Module (ECM) is another critical component; any malfunctions here can significantly hinder the cruise control's operation. Lastly, inspect the wiring for any damage or loose connections, as these can lead to system failures. By methodically addressing these common issues, you can effectively diagnose and potentially resolve the cruise control problems in your Tucson.

How urgent is it to address the malfunctioning cruise control in a 2018 Hyundai Tucson?

When it comes to a malfunctioning cruise control in a 2018 Hyundai Tucson, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. This unpredictability not only endangers the driver and passengers but also poses risks to other road users. Moreover, neglecting this problem can result in increased fuel consumption, as the vehicle may not maintain a consistent speed, leading to higher operational costs over time. Additionally, a malfunctioning cruise control can cause strain on other vehicle components, potentially leading to more extensive and costly repairs down the line. Therefore, it is crucial to take immediate action by seeking professional assistance to diagnose and repair the issue, ensuring both the safety and optimal performance of your vehicle. Addressing the malfunction promptly will not only enhance your driving experience but also help maintain the overall integrity of your Hyundai Tucson.

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